RTW DC2R

Im looking for something simple like this, just a digital read out of the A/F ratio. Most of the displays out on the market come with wideband built in but I dont need that because I have the wideband already installed. Ive used other LED type gauges before but Id rather have a digital display. Anything I should be wary of if I wanted to run something like this off my wideband?

Thanks

ZygSpeed

I don't see any "problem", but it looks like it's only a 3 digit display for the voltage.
What is the relationship between that "voltage" and the actual A/F ratio?

P.S. I just bought one of the AEM wideband units w/gauge.


Modified by zygspeed at 9:54 PM 4/1/2004

RTW DC2R

well theres all kinds of different gauges like the one I posted. you can get gauges that input the voltage and output the A/F.

Im running the AEM WB already, and they dont have just the gauge available and wont have it available until late this year. I wish they did b/c there guauge is set up really nice with LED and LCD readouts.

ZygSpeed

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2 &raquo;</TD></TR><TR><TD CLASS="quote"> I wish they did b/c there guauge is set up really nice with LED and LCD readouts. </TD></TR></TABLE>

I just opened my package from P1 (with the AEM wideband) and I did get and have the Black faced on black housing gauge.

Looks like they're just becoming available and Jack may still have a couple left (of his recent incoming order). HTH Ed

RTW DC2R

yeah but doesnt it already have the WB built in and its like $400? I just need the display, I dont need the WB. Ill hit up Jack and see what hes got to say.

92TypeR

If that falls through we've been using the old school FJO display (not the new fancy LED one) and I think you can still pick those up separately.

confidence

well there is always the Nordskog unit. they make nice stuff at reasonable prices too
http://www.nordskogperformance.net/m9200.html
the discription says it come in 2 5/8 size but it also comes in the 2 1/6 model #m9200 and the m9200 is cheaper. you can order it in amber to match you itr lighting

RTW DC2R

It looks like most(all) of these gauges only display the voltage readings. .500 = 14.7 a/f that would get kind of annoying. Im not sure if I can calibrate it with my EMS to output the a/f reading or not.

ZygSpeed

I remember when Yack simply used a voltmeter to do his tuning.

RTW DC2R

haha that must have driven him kinda nutty.

apparently the gauge/wb combination is a function of the stand alone thats used. So as long as you have a calibration table for the WB, if you tap into the O2 wire from the stand alone you should get an actual a/f reading off the WB instead of a voltage reading. but thats ONLY if you have a current WB set up that reads a/f and not voltage. :shrugs: there are some nice little gauges out there that are relatively cheap

ZygSpeed

You might be able to find some data for a Bosch wideband O2 on the web.

That would essentially be the "calibration table" you mentioned, and just compare the O2 voltages you get with the table to determine the A/F.

Hehe ... but it looks like you already know that.

Hows this for a quick Google search?
http://www.techedge.com.au/vehicle/wbo2/wbntk.htm

Good link on that page:
http://techedge.com.au/vehicle/wbo2/wblambda.htm

92TypeR

Displays AFR instead of voltage.

RTW DC2R

Ed, yeah I know about the TechEdge, but it comes with a WB, not just the gauge AFAIK.

92TypeR, do u know if that one needs to be calibrated so it reads a/f instead of voltage? or is it already set up to calibrate the a/f just by hooking it up to the O2 wire off the ECU?

92TypeR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2 &raquo;</TD></TR><TR><TD CLASS="quote">92TypeR, do u know if that one needs to be calibrated so it reads a/f instead of voltage? or is it already set up to calibrate the a/f just by hooking it up to the O2 wire off the ECU?</TD></TR></TABLE>

I'm not 100% certain on that, I'll take a look this weekend and see if the plugs on the meter are equivilent to the 5wire. I know, at least on the cars I've played with that have that meter, it is plugged into the FJO controller box. But as I said, not 100% certain it can be used directly off of O2 voltage, but I'll do my best and see if it appears to work like that.